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CITY · 2010 ACS

Rock City

Illinois · 315 residents · 0.136 sq mi
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The short version

Rock City has roughly average household income, with a median household income of $56,731. Population has held roughly steady since 2000. 18% of adults hold a bachelor's degree or higher, below the national rate of 28%. Median home value is $105,700. Poverty is rare here, at 6.5% of residents.

At a glance
Wealthier
above the US median
US median: $52,703
Mid-age
median age 37.5
US median: 37.2
Less educated
18% hold a bachelor's degree
US average: 28%
Stable housing
home values roughly flat, inflation adjusted
US median home: $225,659
Section 01

Population & growth

Total population
315
+1%since 2000
from 313 in 2000
1990 – 2025
Population density
2,316 / sq mi
+1%since 2000
from 2,301 / sq mi in 2000
US average: 261
Median age
37.5
+12%since 2000
from 33.5 in 2000
US average: 37.2
Population, 1990 – 2024
2673153624094571990201020202024Rock City
2024441
1990201020202024
Section 02

Income & economy

Median household income
$56,731
−3%inflation adjusted, since 2000
from $46,250 in 2000
US average: $52,703
1990 – 2024
Per capita income
$22,456
+7%since 2000
from $20,920 in 2000
US average: $27,286
Households earning $100K+
30.8%
+6.7 ptssince 2009
from 24.1% in 2009
US average: 33.3%
Poverty rate
6.5%
+1.7 ptssince 2000
from 4.7% in 2000
US average: 13.8%
Income inequality (Gini)
0.377
US average: 0.461
Workforce by industry, 2010
Retail trade32.1%
US avg: 10.9%
Information16.6%
US avg: 11.5%
Finance & insurance6.7%
US avg: 5.1%
Professional, scientific, technical5.7%
US avg: 4.2%
Other services4.1%
US avg: 7%
Public administration4.1%
US avg: 4.9%
Wholesale trade1.6%
US avg: 7.2%
Agriculture, forestry, fishing1%
US avg: 1.9%
Construction1%
US avg: 1.4%
Education & health services1%
US avg: 0.9%
Manufacturing0%
US avg: 0.5%
Transportation & warehousing0%
US avg: 3.1%
Arts, entertainment, food0%
US avg: 2.4%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$105,700
+5%inflation adjusted, since 2000
from $79,300 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$503
+40%inflation adjusted, since 2000
from $283 in 2000
US average: $853
Owner-occupied
61.8%
−21.5 ptssince 2000
from 83.3% in 2000
16.3% rent
Vacancy rate
1.4%
+0.7 ptssince 2009
from 0.7% in 2009
US average: 12.1%
Owner cost-burdened
20.4%
+2.6 ptssince 2009
from 17.8% in 2009
US average: 30.9%
Renter cost-burdened
63.6%
+16.3 ptssince 2009
from 47.4% in 2009
US average: 46.8%
Afford Score
1.9
+9%since 2000
from 1.7 in 2000
1990 – 2024
RELATED:See current rent listings in Rock City on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic99.7%(312)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other0%
Diversity Score0%(0)
2010
White, non-Hispanic96.8%(305)
Black0%(0)
Hispanic / Latino2.5%(8)
Asian0%(0)
Other0%(0)
Diversity Score6.2%(20)
Diversity Score
6
from 0 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
17.8%
+11.2 ptssince 2000
from 6.5% in 2000
US average: 27.9%
High school or higher
93.4%
+13.5 ptssince 2000
from 79.9% in 2000
US average: 84.9%
Graduate degree
7.0%
+3.8 ptssince 2000
from 3.3% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
27.8 min
+80%since 2000
from 15.5 min in 2000
US average: 25.2
Drive alone to work
91.7%
+1.3 ptssince 2009
from 90.4% in 2009
US average: 76.2%
Carpooled to work
3.6%
−2.4 ptssince 2009
from 6.1% in 2009
US average: 10.4%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 4.7%
Worked from home
1.0%
Unchangedsince 2009
from 1.0% in 2009
US average: 4.1%
Walked to work
2.6%
+0.6 ptssince 2009
from 2.0% in 2009
US average: 2.8%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.5%
No vehicle available
6.8%
+0.6 ptssince 2009
from 6.2% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
10.4%
+0.2 ptssince 2009
from 10.2% in 2009
US average: 12.9%
Management & professional
22.3%
−27.0 ptssince 2009
from 49.2% in 2009
US average: 35.2%
Section 08

People & community

Male
52.2%
+1.1 ptssince 2009
from 51.1% in 2009
Female
47.8%
−1.1 ptssince 2009
from 48.9% in 2009
Foreign born
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 12.8%
Veterans
3.3%
−49.1 ptssince 2009
from 52.4% in 2009
US average: 9.9%
Drill deeper

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Compare Rock City to nearby cities

ROCK CITY VS
Freeport
Income$51,723−9%
Home value$92,100−13%
Population23,202+8041%
SEE FULL COMPARISON →
ROCK CITY VS
Monroe
Income$69,334+22%
Home value$195,300+85%
Population10,581+3613%
SEE FULL COMPARISON →
ROCK CITY VS
Machesney Park
Income$75,489+33%
Home value$173,700+64%
Population22,805+7902%
SEE FULL COMPARISON →
ROCK CITY VS
Rockford
Income$54,752−3%
Home value$129,000+22%
Population147,384+51614%
SEE FULL COMPARISON →
Frequently asked

How many people live in Rock City, Illinois?

Rock City, Illinois has about 315 residents according to the 2010 American Community Survey.

What is the median household income in Rock City, Illinois?

The typical household in Rock City, Illinois earns about $56,731 a year. Half of households make more than that, and half make less.

Is Rock City, Illinois expensive?

In Rock City, Illinois, the median home is worth about $105,700, and the typical rent is about $503 a month.

How educated are people in Rock City, Illinois?

About 17.8% of adults age 25 and over in Rock City, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Rock City, Illinois?

About 6.5% of people in Rock City, Illinois live below the federal poverty line.

Has Rock City, Illinois grown since 1990?

Yes, Rock City, Illinois has grown since 1990. The population has added about 32 residents, a change of about 11 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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